Nafiu WRA, Mili MZ. TRANSFORMASI PENDEKATAN VALUASI MINERAL DALAM FORMULA HARGA PATOKAN MINERAL (HPM) INDONESIA : THE TRANSFORMATION OF MINERAL VALUATION APPROACHES IN INDONESIA’S MINERAL BENCHMARK PRICE (HPM) FORMULA. JTP [Internet]. 2026 Aug. 15 [cited 2026 Sep. 17];26(2):91-7. Available from: https://e-journal.upr.ac.id/index.php/JTP/article/view/27055